Pre-65 Bikes

Hi there my dad is looking to ride the Scottish Pre65 in 2015 but he needs to sort out the forks on the bantam, can anyone tell me what forks to use or what forks you turn down to fit Triumph 3TA fork bottoms and what yokes to use. cheers

Just wondering how many people stick to Bantam forks when doing a Pre 65 Bantam trials build, are they usable? what mods if any? or is the C15 fork conversion a better bet? I've already got some Bantam forks (D7) so would like to use them if they're suitable, but if not I'll look for others, any recomendations? Thanks.

Hi Guys Thinking of building a Trials Bantam/ Cub & my first issue is front frame modifications. Before I decide which way to go I thought that there must be members out there who have already been down this road. Headstock angle I have a D10 front frame & want to sharpen the headstock angle, been advised to change the front down tube for a C15 tube which is one inch shorter. What headstock angle are we trying to achieve? Please suggest how best this can be done Engine mounts It's usual to move the engine mounts to the left to aid the chain run with a Cub Engine in a Bantam frame, Does anyone have the details? Also what other front frame mod's should I be…

I have a bantam frame. The frame number starts BD25**** but its very faint, I’m not sure of the year or type (think it’s a D7) I’m in the process of fitting a C15 engine, how hard would it be to get a V5 for this frame / Bike?

Just come in out of the garage after wrestling with the rob Homer frame i bought thinking i would save myself a bit of money. OK its CDS not T45 like those Alan Whitton ones but with my level of inexpertise it wont make much difference. Well after spending hours and hours over the last week or two trying to get things to fit i am beginning to wonder if the saving was really worth it. I have had a DRR frame supplied through Alan before and everything just fitted together as it should. No re drilling, no reaming out, no filing etc etc. Plus the welding / brazing is to die for and it seems a shame to paint over it. Is it just me ? Do i just happen to have a Friday frame ? OK…

Sorry for yet another Bantam question but.......B175 frame:- The cast iron lug wel.ded to the top of the frame at rear, the top mounting for the subframe. Is this welded to the frame or is it a lug joining the two sections of frame together? I remember seeing an old film of frames being brazed together on a hearth using lugs and frame .sections being brazed in. I don't want to grind it off and my frame fall in two bits!

Hi, I've got a Bantam with replacement front forks/yokes - one of the top oil seals is knackered and I'm trying to identify the make of forks, does anyone know the make or where I can source a replacement seal. See attached photos. Thanks Elliot

Is there anything to do to a BSA Bantam front hub(std D14 / B175) before it goes to be laced to a 21" rim. I have the rear sorted (widened) just don't want to get it laced to find out I should have done something. Thanks in advance.

Hi All Plodding along with my Bantam build, finally got a chance to put her up on her wheels and i've hit a bit of a problem with the sprocket alignment. The rear is a Bultaco wheel and there is no way of moving the sprocket closer to the hub without some serious machining so my question is can you offset the front sprocket? It is a D7 engine and whilist i haven't managed to measure the difference accurately yet i estimate it is about 5-6mm too far in. The other option is to move the engine over in the frame but the exhaust is already virtually touching the frame down tube. Many thanks in advance Chris

I am sorting a front hub to build the wheel. The spokes are small (2.5) guage. Has anyone fitted 3mm, or drilled the hub for bigger?? . Also what rim size are people going for (wm) . Thanks in advance...

I'm currently rebuilding a bantam D10a 4 speed engine and i've got a couple of problems.... 1. The 3rd / 4th gear selector fork keeps popping out of engagement with its dog. I'm pretty sure that the selector fork is damaged but it doesn't look like there is any breakage. I have (hopefully) attached a few pics to help explain the problem. Is the fork damaged or am I doing something else silly ? 2. I need to replace the bronze bushes in the final drive gear. Are there any hints or tips for this ?

hi guys any advise on what oil to use for the bantam 4 speed gearbox/clutch many thanks

Am in the process of stripping my bantam engine, would like to know if swapping the 2nd and 3rd is adequat or is it better to change 2nd for a close ratio gear?many thanks

Well the sows ear project is progressing very slowly and i am now at the point where i am looking to fit sprockets. Got a 12 tooth crankshaft sprocket fitted so what is the best combination gearbox and rear sprocket that people have found

just finishing my 4 speed 185 cc bantam project but not sure what gearbox and rear wheel sprockets to start with, the engine has 12t primary sprocket any ideas would be most welcome.

Hi all doing a bantam engine and I cant remember what gears I swop from mainshaft to lay shaft I think its main shaft 3rd with lay shaft 2nd the ones fixed with the circlip not the sliding gears . I wrote down the number of teeth 26 to22 and 25 to 21 but cant remember if its the fixed or sliding gears . Many thanks Martin

Took the bantam out for a shake down(broke the front mudguard ),after about 15-20 mins the poor little bike was getting a wee bit hot and started to die .The bike is running standard ignition,B6 plug,new amal concentric,foam filter.140 main jet,2.5 pilot.The plug was on the light side so probably needs a 150main?, is there any other ways to keep the wee thing cool and where can I get a inlet extension for the carb. as at present it only has a heat shield. cheers the noo Brian

hey all, been playing about on the bantam over the last few months, i like it alot, the thing is i want more power! i have a Todd head fitted and a ts185 piston fitted, but i have seen bantams on ebay and sites with 198cc?? how do i get this? i know i have to re bore the barrel but what piston will fit? any help would be great cheers Mikey

A while back I bought a BSA Bantam 175 as an unfinished trials project, its a D7 frame but the rear tyre (4.00 x 18) catches the swinging arm. Does anyone know the best mod? Is is a case of extending the swinging arm behind the shock mounts or is their a better way? Cheers Eiger

Hi there I have a BSA Bantam d14 ( I think) in bits and wanted to convert it to trials trim . I dont Know alot about these bikes in any trim so what would i need to look at doing and where could i get the parts like exhaust any help would be helpful regards Neil