leeson660

Few clips of me riding my Leeson Clear 660: https://www.youtube.com/watch?v=aCdCuKEmOxY

Hi guys I hope I'm posting in the right forum here. Having ridden mountain bike trials for over 12 years I've just got my first moto trials bike - 2012 Gas Gas TXT 280 Pro Racing. Absolutely loving it so far - real challenge but so much fun. My question is regarding the rear brake. I'm used to hydraulic rim brakes with a grind on my mtb trials bike which are insanely powerful and then hydraulic discs on my downhill bike which are equally powerful but obviously not as grabby. The front brake on my Gas Gas is really sweet, I can easily stoppie or lock up for nice endos etc really happy with it. However the back brake compared to what I'm used to is pretty weak. If I really step on it the rear wheel will lock, but I cant see it holding on gaps, rear wheel hops or correcting a wheelie that's been overcooked! Is this typical of rear trials brake? Lever feel is OK its not really spongy or anything like that. I appreciate the disc is very small so I assumed power would be fairly limited. Watching some of the top guys they fully commit to huge gaps landing back wheel first pretty much vertical - as you would on a mountain bike trials bike. I assume their brakes must be pretty powerful otherwise they'd just loop out? If this isn't typical if anyone could share any tips for improving rear brake performance? Are there uprated pads I can buy to get more bite / power? Any help / advice would be greatly appreciated. Cheers James

Absolutely spot on really appreciate this detailed info / advice, it makes perfect sense what you have said. I'm using Shell V Power with Putoline Trials Oil which has been recommended to me by quite a few people. I believe the previous owner knew his stuff and really looked after the bike so hopefully everything is OK. Thanks again

Ok thanks very much I will have a look and make sure the coolant is now down to that level. Hopefully that's the answer! Cheers for the info. Seems absolutely bizarre to me that using the ratio in the manual is so bad for the bike. Not doubting what your saying as I've done a lot of research on it and have seen everything from 50:1 to 100:1. As I said on the next fill I'll be running 60:1 and go from there.

Hi guys Got a 2012 Txt Pro Racing - my first trials bike so I'm not yet familiar with what is normal and what isn't. Went out for a quick ride tonight and after about 20 minutes practising in work car park with a few pallets (very slow - trackstands, endos etc) I noticed that steam was coming out quite fast of the radiator overflow pipe and the odd spit of coolant. I immediately turned the bike off and the vapour continued to come out for about 15 seconds then stopped. The fan hadn't come on once during the ride. This actually happened on my first ride on the bike a few weeks ago. Last week I spent probably 4 hours in 20 minute stints doing again pretty slow stuff and it was fine with the fan kicking in intermittently - I'd estimate 25% of the time. At the weekend I replaced the existing coolant with Putoline Coolant NF - topped right up. Ran the bike on the stand for 10 minutes on tick over and ran perfectly. Only other info that may be relevant is I'm currently running 50:1 as per the manual. However I understand that most people run a little leaner so I'm going to try 60:1 on the next tank. During both times where steam has come out the bike hasn't smelt hot, has been running sweet with no loss of power. My first thought is that the thermostat may be faulty so the fan isn't kicking in when it should allowing the coolant to get too hot? I may be talking complete rubbish there though! Any help / info would be greatly appreciated. Thanks James

Thanks for the info. I've found all of the info I asked originally so please feel free to close the topic. Cheers

Sorry I forgot to ask: Is it best to use a premium fuel like Shell V Power? Thanks again

Hi chaps I've just pulled the trigger on a lovely 2012 Gas Gas Pro Racing I'm collecting Wednesday v excited! I've raced motocross for quite a few years when I was younger then moved on to mountain bike trials and now race DH as well. Although I've ridden mtb trials for 12+ years I know very little about these bikes so I have a few very basic questions. If anyone could help me out that would be very much appreciated. Sorry if any of the questions are daft. I am pretty fastidious in maintenance and care for all my bikes and this will be no different - really want to treat the bike to the best. 1. What is the best oil I can get for the bike? I heard someone mention Castrol A747 in a post whilst searching? 2. What ratio do you recommend - I assume its the same as MX 2 stroke i.e. pre mix it to a certain ratio? 3. Is it correct to warm the bike up before using it and warm down? 4. Any other tips really to keep it running A1 i.e. oil changes, regular maintenance etc. I'd rather over do the maintenance rather than under doing it. 5. Obviously you cant ride it like a MX bike so I take it all the power is low / mid range? Do you have to be nice and gentle on it as its so light? Any help along with any other info would be much appreciated. I've attached the photos off Ebay in case anyone wanted to have a look. Cheers James www.trials-uk.com