Jump to content

woody

Members
  • Posts

    4,079
  • Joined

  • Last visited

Everything posted by woody
 
 
  1. I doubt it would matter if he was on a stock bike anyway in the SSDT as a stock bike can cope perfectly well with the sections. Big power and super light weight isn't really necessary. I had hoped he would win, not because he was on the Mont particularly, just because I think he is an excellent all-rounder and seems to genuinely enjoy his riding, trials or enduro. Difficult to see Honda going 2-stroke as it is against everything they have preached in recent years. Who knows whether there will be a new trials bike even. History shows they feel no need to produce a copy or replica of the world round bikes as there was never a production version of the works 305 or 360 twinshock. They were winning titles and that was enough. The RTL Mono works bikes were drastically different from the production bikes (especially Lejeunes aborted 360) and when titles eluded them they pulled the plug. Seems it's all about winning titles, as mentioned in other posts. As long as Bou is winning the title for them, I'd agree with previous posts, they probably won't care if there is a production bike or not as it is such small beer in terms of revenue.
  2. The engine internals on the RTL and TLR are basically the same, piston, valves, cam etc. The RTL has a different ignition which gives a different power characteristic, smoother off idle than the TLR which in standard config is too sharp, prone to spit stall and doesn't rev out. Valve timing may differ as well. Later RTL had a bigger clutch and different gear ratios. Jerry - not sure which TLR you are referring to, the twinshock TLR wasn't made in '87, they were '84. The TLR250R was '87 but that was a different bike althogether, monoshock and a different engine.
  3. Brilliantly done and very funny. I'm crying with laughter. "we'll get him a Beta"
  4. He's riding a Cub in the Pre65 and Yam in the 6 day
  5. Yes, I should be able to find you ok as I'm sure I'll recognise the bike - nice job. I'll be bringing some bits for you from Dave Dawson
  6. Be careful if buying a flanged tubeless rim from a 90's Beta as some of them are 32 spokes, not 36.
  7. Thanks again Daz, not seen that website before, no idea why it has never come in any of my searches.
  8. Or try here and ask Colin about tubeless rim conversion as he is working on those for the TLR250 at the moment, although the 250 and 200 hubs are different I believe. Or possibly a replacement tubed rim which can be anodised silver. http://www.tyoffroad.webeden.co.uk/#
  9. Thanks Daz Another question - has anyone who has entered received any confirmation of entry yet, entry list or whatever. I've received nothing yet and my cheque hasn't been cashed. Again, don't want to pester the secretary as he probably has enough to do this week, but I'll have to phone if I've heard nothing in the next couple of days. I've never ridden this event before so don't know what the norm is for entry confirmation etc.
  10. Bit of help please - I know one venue for this trial is Barbrook, can anyone tell me where the other one is as I can't find anything on this trial anywhere on the net. Don't want to phone the secretary unless I have to. Also, which is the day 1 venue, Barbrook or the other one. Thanks Edit - sorted now thanks.
  11. Your carb settings are the same as mine, I've pretty well cured the dreaded cough stall on mine by moving the carb further back using two tefnol spacers (20mm each I think). It won't stop it completely but I can open the throttle pretty quickly without problem and have to be pretty viscious on the throttle now to make it miss. Not saying it will work on yours but worked for me. Found out by accident as I was trying to make the power delivery off tickover as soft as possible by moving the carb back and this turned out to be a side affect if you like. Mine is standard road type engine (distributor model) with standard head/valves/cam, only mod is a 650 Triumph piston. You can get the spacers from here if required http://www.hitchcocksmotorcycles.com/amal-carburettors-miscellaneous Just had my carb apart to clean it for tomorrow's PJ1 round and noticed I'd forgotten to mention one other thing. My carb has a 35 pilot jet fitted. The airway behind the pilot/air screw has been drilled out in order to allow a bigger pilot. Not sure what is involved in doing this as I didn't do it so can't offer any advice on this.
  12. Sadly, no Robregordo for me again this year as can't afford it. Hopefully things will pick up as I'd like to do Santigosa again in October
  13. woody

    Puma rear hub ?

    You could be right with the hubs, I've never seen later Alpina hubs Most of the Puma bikes run the original spec hubs, they are machined out to take a steel liner. The shoes would be fitted with oversize liners, probably of a material that gives a better feel for trials and skimmed to fit for a much bigger contact surface. I've tried 3 or 4 with Sherpa hubs and the brakes were perfect on all of them, including those operated by R/H pedal with the cable.
  14. Yes, 20" and 17" I've no idea of the availability of tyres but isn't it possible to rebuild normal rims onto the hubs, or fit 175/250/350 Sherpa wheels (I'm assuming the rest of the bike, frame, forks, are full size, not scaled down)
  15. woody

    Puma rear hub ?

    Don't think it is a Pursang hub as there aren't enough sprocket bolts. You could try a TY175/250 twinshock rear wheel or a Montesa Cota 247, both have brake/sprocket on opposite sides. However, I have a Sherpa rear brake that works perfectly well with a cable from a R/H side pedal. The only mod I made was to make my own pedal as I wasn't keen on the feel of the alloy Sherpa one, and when I lowered the footrests I couldn't reach it properly anyway. It still uses the original pivot point, just reshaped for the new footrest position. I can lock the rear wheel without problem.
  16. First issue is the condition of the springs, they could be ok or sagged out after 30 years. Difficult to tell but by increasing spacer length to counter the bottoming, what that can happen is the coils close up with the forks fully extended and there is the possiblity of them compressing completely before maximum travel is used if overly long spacers are used. Also you don't mention which Fantic it is. 35mm forks or 32mm. 190cc of oil is edging towards minimum for 35mm forks, usually the recommendation for them is 220cc. Best to start with 200cc (or 190cc in your case) and add 10cc at a time to obtain correct action. It's trial and error basis. 10W for oil should be fine in Marzocchis. However, you must be sure of the spring condition, otherwise attempts at set up could be pointless. The other unknown is whether they are the original springs. They could have been replaced with something else by a previous owner. If they are 35mm forks, WES did progressive springs for these which work very well, if you can find anyone who stocks them. Or you could get original spec springs from Bill Pye maybe. A third alternative is fit the Magical front fork spring kit which is available from Yamaha-Majesty.com. The problem won't be helped by air escaping because as you say, it lessens the spring affect. I've had the same problem on Ossas and Bultacos, getting a face full of oil when the forks compress. I just block off the hole. Never had a problem blowing seals. You can always fit a valve which will allow you to depressurise them if required. Front fork settings are a personal thing really, there is no hard and fast rule, some like harder action, some softer. As a starting point, once you are happy that you have correct spec springs, either original type or aftermarket, start with 200cc of 10W and adjust from there, but that volume and viscosity should be as near as you'll need for most conditions - for 35mm.
  17. woody

    TL250 Honda rehab

    Shedworks also do TL250 sidepanels http://www.shedworks.net/id14.html
  18. I've used a tubless tyre, can't see what difference it would make using a tube type though.
  19. 40lbs springs are too soft for your weight. I'm about 110kg and if I get on a bike with 40lbs springs there is no travel left. I use 60lbs springs on Falcons
  20. Nope, newest Ossa I've ridden is a Gripper. I know a few who have ridden one and said they are very easy to ride. But what I meant was that the results achieved so far show the bike is capable as Guy Kendrew has had some good national positions.
  21. Costume jewellery; surely Guy Kendrew's results show that it is a capable bike. It also won first time out with one of the Dixon brothers if I remember rightly.
  22. Before we get carried away this is what happened. Rewinding the clock a bit, the Sammy Miller Greensmith trial was held in the same area last October. The police were about in an unmarked silver BMW and were pulling riders up for spot checks, usual warnings were given about number plate size, horns etc. There was at least one rider on an illegal machine (ie; not registered for road use) and he was let off with a warning. A bloody good result really given the summonses that could have been issued and loss of licence. So on to today, same unmarked BMW (presumably) pulling riders for spot checks. Some again received warnings for incorrect sized number plates. One rider whose bike wasn't road registered has had it impounded, plus a fine, plus points. It isn't being crushed. He took it home, he has to pay for them to come and collect it and take it to the pound, then has to pay to recover it. Presumably, if it happened again it would be in the crusher. A fine and points plus fees is still bonus as it could have been bye bye licence. Whilst it's easy to moan about police hassling, which would be understandable if it was just horns, speedos and number plates, I guess they thought that in the last event there were unregistered bikes being used on the road so they would see if anyone heeded the warnings given back then. They found they hadn't, so second time, riders weren't going to be so lucky. As for moving away from road trials, why? It costs less to make a bike road legal than it does to buy all the fancy bling gear for a bike or all the fancy riding gear, airbrushed helmet paintjobs etc. It's about priorities.
  23. There is no such rule and I can think of no logical reason why one should ever be introduced (too late anyway as a lot of bikes have them fitted) I've changed some of my bikes to tubeless over the last few years, mainly because of the eratic quality of the tube type IRC rear tyre. Some have very soft sidewalls which can make the bike very difficult to control on rocks or cambers due to tyre roll. Others seem to be fine but can (not always) soften eventually, particularly with spirited road use... Also, the softer the sidewall the more chance of compression punctures. The only other tube type tyre is the Michelin radial which is different from an X11 and is utter rubbish in mud. May as well use a Michelin Pilot. Probably ok on rocks but mine wasn't on long enough to find out. Tubeless tyres will sit ok on Akront tube type rims with a tube fitted, but not always Takasago or DID. They pop out ok when first inflated but as soon as they are let down to about 10psi part of the sidewall drops into the rim and nothing seems to stop it, even leaving it for a couple of weeks with 90psi in it. So it's possible to use a tubless tyre on a normal tubed rim in some cases. An alternative is the Tubliss system, see link below. This effectively converts a tube type rim into a tubeless arrangement. My KT250 rim won't hold a tubeless tyre, it drops into the rim, as above. With the tubliss system fitted it will hold an IRC tubeless tyre no problem. I've done about 6 events with it fitted no problem, running as low as 3psi. No tube type tyre roll and no compression punctures. Not too fiddly to fit and a good alternative until I can get another wheel to convert to a tubeless rim as ultimately, although the tubliss system works well, that's my preference. http://www.tubliss.co.uk/ As to whether it is worth the cost of converting to a tubless rim, there is no real benefit in terms of grip, an IRC tube type will grip just as well as the tubeless version (assuming it isn't the roly poly type in which case higher pressure is needed to stop the roll which reduces grip) Tubeless also reduces the possibility of punctures as you can't get a compression puncture to a tube. So in my opinion, for that reason alone, the tubeless is a better option ultimately, but it is just my opinion.
 
×
  • Create New...