Search found 139 matches
Not sure its for a B50 as the bore would leave 2mm wall thickness for the liner, i don't have the stud pattern measurements for a B50, but i tried it on a B44 and the spacer was smaller. I seem to have created 2 posts because my first would not go through but it seems it now has, is it possible to d...
- Sat Jun 15, 2019 2:45 pm
- Forum: Parts & Bikes wanted
- Topic: OIF Frame and 250ish Engine WANTED
- Replies: 1
- Views: 790
I have a B25 frame, crank cases and crank, i also have a b44 crank, c/cases and various other b44 bits, PM me for contact details. in leicester.
- Fri Jun 14, 2019 4:59 pm
- Forum: Parts & Bikes wanted
- Topic: Prop stand and sump plate
- Replies: 13
- Views: 3394
I have a sump guard in very good condition, Only small fault is the lower mounting holes have been filed to make removal easier i guess, you would not see it when fitted. In leicester,
You might take a look at Thunder engineerings alloy rods for a 500 triumph. I believe they fit the B25, Very well made, I have fitted several sets to race engines with no problems so far, And far better value than Carrillo. Iv'e seen lots of comments saying do not use this make of shell or that make...
I have the cases to match the crank on sale. in good condition , all threads look to be fine. One small part has been welded where the oil scraper has been knocked at some time, some scratches and rubbing marks here and there but ready to be used as is after a bit of a clean Will make a nice set of ...
I have some parts im looking to sell, First is a crank from a B44 b VS . Looks to be in all round good condition. Big end feels fine but no guarantee, Threads and keyways all in very good order, £150 regards. Harry. Edit by MM, phone number removed to protect you from the insidious, please use the P...
I wondered how long it would be before we got our legs slapped! Many thanks for the battery info, i think i will go that route with out an alternator. regards Harry.
Our races are on speedway tracks for 6 to 8 laps at around 30s a lap. So not a lot of on track time, A short practice , 3 heats and an 8 lap final, so probably about 35 mins max run time, The debate is wether to run with an alternator and reg box, or just a battery, Hwan said he had an average 2amp ...
Hwan. I was thinking of fitting a wassell ignition to my T140 Flattrack race bike, from yours and Stans findings it would indicate that i would need to run an alternator to keep the battery up, would you agree.
A lot of people go for Betor . Ciriani, or Marzzochi. I have tried to find good quality progressive springs but 70's bsa's are not on any list i can find. One company did have B50's listed but they also listed 750 T140 and Trident as the same spring , so make of that what you will.One warning i will...
- Sun Jan 01, 2017 2:37 pm
- Forum: Tech
- Topic: B50 Fork stanchion length??
- Replies: 11
- Views: 2254
The effect will be slower steering which = a more ponderous front end, It will increase the already long rake angle, in theory you would want to raise the rear the same amount to keep things the same as factory, except a higher seat height. None of this would be an ideal street mod in my opinion. I ...
- Mon Oct 31, 2016 11:06 pm
- Forum: Tech
- Topic: Mikuni cold starter jet change
- Replies: 9
- Views: 2169
On the 32mm the choke jet is to big, a company called moto carb will do a conversion for you for £25. Or he will sell you a jet . He drills his out from the inside then taps it 4mm , i do my own with his jets. If you turn your bowl upside down you will see a small round stub under the jet, I drill t...
I don't think its been mentioned yet and is often overlooked is the slide cutaway size which works around the midrange area, iv'e had it happen 3 times on different bikes with similar problems, Not many bikes are factory standard after a few years of wear and tear and modification, if its to small i...
The secret is Jim is to leave it alone unless you have worn sprockets. standard is ok if its your first race, but as has already been said it depends on the track. Unless your Jeff Smith a few teeth ain't gonna make a lot of difference. Get used to the bike, concentrate more on the handling setup, L...
Don't mean to be a pain but there are hundreds of them on ebay most of them with several tubes sticking out. Are there any make or model that have been tried and tested, i bought some of the xs650 reed ones fitted about 14" from the case but they get gummed up fairly quick. Perhaps some sort of oil ...
- Sun Aug 21, 2016 12:33 pm
- Forum: Tech
- Topic: The best way to get an honest 40hp from a B50
- Replies: 20
- Views: 3918
Did you feel a difference Tom by going to the long rod? I have a 540 kit ready to go into my flattracker, i also have a 6" carrillo standing by, but i think stan will slap my legs if i put it in. regards, Harry.
Can i ask Mintey if you noticed a difference after fitting your long rod, I have my B50 flattracker in bits at the moment to fit a JE 540 kit and discovered i have a polished standard rod in it , and i will have to change it for peace of mind. Could do with some seat of the pants info, whether to pa...
Is it common for the cylinder studs to seize in the alloy barrel on a B50 mx . Getting ready to fit a 540 kit. this bike has been off road and round speedway tracks for 2 seasons so its seen its fair share of muck. Don't no when the last time it was off, but it does not want to come off now, my next...
You are just up the road from Steve at Thunder Engineering, take the time to see his rods, you will not find any file marks on his, he has invested in an expensive Honing machine to finish the Big end and little end.