youngbloodhawk Posted November 20, 2012 Report Share Posted November 20, 2012 (edited) 1st post so be kind new guy from Mississippi USA im 60 and about worn out have a number of replacement parts but i dont mean chains and pistons its a hip and knee or too that said my model 91 Sherpa T is a 1972 model ive owned it almost 40 years how can i make it easier to crank i switched to ngk iridium plugs and 40-1 Belray full synthetic seem to help a recent post mentioned easier cranking with 50-1 will my bike digest this ratio ok or is it too old? as its a long way from the old 25-1 recomendation also is there an affordable electronic ignition conversion avaliable $400 $450 or less thats reliable out there somewhere? not trying to be cheap actually and i guess its not out of line to mention non trials bikes just that i also have model 85 250 alpina so im talking times two thanks in advance HAWK Edited November 20, 2012 by youngbloodhawk Quote Link to comment Share on other sites More sharing options...
reginald Posted November 20, 2012 Report Share Posted November 20, 2012 If you google "motorcycle electrics uk" youll find as company that sells bultaco electronic kits. A fresh delorto or mikuni carb may help as well? I have a decomp on my SWM and it really helps so you don't try to kick at TDC. You can also hill start in a low gear with a decomp. Quote Link to comment Share on other sites More sharing options...
woody Posted November 20, 2012 Report Share Posted November 20, 2012 Nothing you mention will make it 'easier to start'. The Bultaco will start first time on points and Amal if in good order. I have electronic ignition and a Dellorto on my 340 and it is no different to kick up than my old model 92 which is on points. I think if you spend money on new ignition and new carb, you're going to be disappointed. I'm guessing you're having problems because of the high kickstart, kickstart gear ratio and the compression. Try and get the technique better. Get the kickstart positioned by pulling in the clutch, rotating it then letting it back up to where it is comfortable, just on or past the vertical, then usually one hard push will do it. Don't kick or thrash at it, as that usually just results in a kick-back and your knee in the bars. Not sure a decompressor will help on the Bultaco due to the ratio and short throw but if you can get one fitted relatively cheaply it's worth a try. If you do end up getting electronic and from the UK, i'd get one from Bultaco UK or Rex Caunt (same ignition I think) rather than Electrex. I use 50:1 with Castrol TTS and a two year old rebuilt motor still sounds as new and it has had a good hammering in that time with regular use. Won't make any difference to starting over 40:1 though. Plug is NGKBP6ES Nice Stingray Quote Link to comment Share on other sites More sharing options...
bondy Posted November 20, 2012 Report Share Posted November 20, 2012 hi woody sorry to butt in on your thread but i thought the plug was BP5ES or is BP6ES a better plug also the castrol TTS is it fully synthetic or semi? Quote Link to comment Share on other sites More sharing options...
woody Posted November 20, 2012 Report Share Posted November 20, 2012 I'm not saying that is the plug to use, just that it is the plug I have in mine and the bike runs fine on it. I've used between BP5ES and BP7ES with no problems in all my Bults and Ossas. I doubt you'd tell any difference between them. I can't anyway, they're too close together in the heat range. The only plugs I don't use are the micro-tipped things which are no good for trials bikes, they're made for constantly high revving engines and need the revs to keep clean, such as motocross. As soon as you run the engine slowly like on a trials, or as we did, an enduro bike, they can whisker and pack up. No idea whether TTS is semi or fully synthetic, I've used it for years and never had problems, it doesn't gum up rings or exhaust and the piston is always nicely coated when I've removed a cylinder, as is big end. It's what I've run my 340 on in the two years since it was rebuilt and it still sounds like new and it has taken some real abuse in sections and done a lot of roadwork. Quote Link to comment Share on other sites More sharing options...
bondy Posted November 20, 2012 Report Share Posted November 20, 2012 ok woody cheers ill give TTS a go. Quote Link to comment Share on other sites More sharing options...
youngbloodhawk Posted November 20, 2012 Author Report Share Posted November 20, 2012 thanks for the information so far guys ok at 40-1 and synthetic im good always used bp5es at gapped at 20 ngk iridiums at 22 not what i need dont need electronic and carb is tight sounds like i just need to keep cranking them cold with me standing on my milk crate as after the 1st start it they crank very easily for the rest of the day all ears for anything else thanks Quote Link to comment Share on other sites More sharing options...
bullylover Posted November 21, 2012 Report Share Posted November 21, 2012 Just to make a point that Bultaco used to recommend a plug gap of 15 thou or .40 mm. I have found that with points ignitions this gap makes them start a lot easier than a wider gap. It is the same as the points gap. Try that and see how it starts. Quote Link to comment Share on other sites More sharing options...
youngbloodhawk Posted December 25, 2012 Author Report Share Posted December 25, 2012 update guys life is good got harder and harder to start cold then common sence returned filed and opened points gap a little after a week of not cranking FIRES UP 1ST KICK there is a god! week later, starts as new the other thing i relearned from the old days was cold no throttle on 1st kick to enrichen (throttle kills choke effect) then 1/4 for a little air afterwards thanks Quote Link to comment Share on other sites More sharing options...
htrdoug Posted December 25, 2012 Report Share Posted December 25, 2012 I find it also helps to put the bike in 3rd or 4th gear and rock it back and forth a few times before kicking, It's like kicking it a bunch of times without the effort. If you hold the clutch lever in while rocking it'll help get it broke loose too. Quote Link to comment Share on other sites More sharing options...
trialsrfun Posted December 25, 2012 Report Share Posted December 25, 2012 (edited) 'If you do end up getting electronic and from the UK, i'd get one from Bultaco UK or Rex Caunt (same ignition I think) rather than Electrex.' Is there a running, starting or fitting issue with the Electrex ignition? Just curious, I am looking to purchase a Bultaco electronic system quite soon. Edited December 25, 2012 by trialsrfun Quote Link to comment Share on other sites More sharing options...
bondy Posted December 26, 2012 Report Share Posted December 26, 2012 hi i had a electronic ignition from bultaco uk with no issues easy to fix can only go on 1 way the only thing you will you dont get a big spark this is nothing to worry about stats up and runs great i will be buying anougther 1 hope this helps. Quote Link to comment Share on other sites More sharing options...
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