frankieboy

Alan Try these: NSA Classic Motorcycles spares in suffolk england, (ebay seller: njavery) they have a 13t sprocket at

Alan Ha Haaaaaaaaaaaa Brilliant, I'd seen that Photo when Trawling around a couple of weeks back, didnt realise that was you, nice to put a face to ya mate! Blimey thats the biggest rear sprocket Ive seen on a Bantam! Over here, they change the front engine (crank) sprocket for a smaller one too, as well as using a small gearbox sprocket, enables you to still get a very low ratio without having to use such a large rear one. all sizes of gearbox sprockets are available over here dependent on your chain size, let me know what yours is & I'll see if I can direct you where to get one, all advertised on ebay by Trials parts suppliers in the UK. I havnt sorted posting photos on here yet, will probably subscribe, shortly & do it that way. meanwhile, if you send me ur email I'll send some pics of my projects. I have same bars & similar (Bushman Tank) on mine, but I wanna change the Bars or the top yoke, to get them further forward too & maybe an alloy Tank later too. Youd think that you were in the UK by the pic. Nice one Frankie

Alan, well the 66 cub standard wheel rim I should think is a wm2 x 18" but they varied depending on which year & model cub it came from.If you let me know, I can check it out in The Tiger Cub Bible which I have a copy of & its stacked with all the specs of all the years & variations, but if the rim is an original, it will have it stamped on it ie: wm2 x 18" or wm3 x 18", most replacement rims of 40 spokes will be stamped with their size.The modern & japanese rims are measured & stamped differently & I think this is how they compare ie: 1.65 equiv to wm1, 1.85 equiv to wm2, 2.15 equiv to wm3 & so on. I just sold an old Cub Rim with the cast iron Hub,that was a front & it was a wm2 x 17" I know what you mean re footpeg position, cos the way mine was set up, the seat seemed far too low in relation to the position of the Bars/Pegs, but from pics all the pre65 Trials Bikes now seem to have the set up much the same, I have a lowered subframe on mine, & have put some risers on it for the seat, but may remove them once I get it to a rideable stage, I'll have to see how it goes. I'm 5' 11" same height as the guy who altered it & Trialled it, but it sure doesnt suit me, but we'll see! also. are you running a 4.00 tyre in yours? Frankie

Hi Alan, many thanks for that! well the Swinging Arm has already been widened to Cub spec by the previous owner who used it for Trials for 2 or 3 years, with a proper trials tyre 4.00 x 18" I have a 4.00 x 18" Proper Trials IRC tyre which I am using. I'm hoping not to have to move the engine over, (when I get one!!!) thats why I want to know the offset of the Hub in the Rim! so I can have the wheels built up. also whether I NEED to use a wm3 size Rim, or whether a wm2 would be better? best regards Frankieboy

Hi I am new to the site & to trials too, though have built from scratch many British Frame based specials over the years. I have a couple of old Bantams, one based on a 69/70 B175 Bushman,which has been Trialled for 2 or 3 years, t'other is a D10 engined D7 & its gonna be a Trials style road runabout! I have a friend who is going to rebuild the Wheels for me shortly, & for the rear I wondered if anyone could advise what offset from central to have the rear wheels laced. I have 4.00 x 18" rear Trials Tyres, & was intending to use WM3 Rims, though it has been said that WM2 Rims should be used? I have some thicker rear engine plates from Rex Caunt Racing, in case I have to move the Engine over to the left, but would prefer to avoid this if possible.The swinging arm has been widened by the previous Trials owner, too. But I bought the Bike as a bare Frame Forks & swinging Arm, & have built it up from there. currently there isnt an Engine for it, but will hopefully be getting a B175 or D14/4 for it in due course. The Forks for the Bushman Trials are from an early Honda SL/XL/TL ? 125 which I have fitted a TY175 front Wheel in. The Roadgoing/Trials runabout, is a 62 D7 fitted with a D10 Engine, & I have so far fitted a C15 set of Forks to it. I intend fitting a WM1 x 21" front alloy rim laced to the Bantam Hub & a WM3 x 18" rear alloy rim laced again to the Bantam Hub, (but am wondering whether WM2 should be used??) The engine I have in this is a standard 3 speed D10, which I shall use initially, then change for a 4 speed engine in due course. I shall Probably fit this one with Bushman Trail gearing & a decent carrying rack on it too. Any advice/help/ideas from you trials experts would be much appreciated, many thanks, all the best Frankieboy

Hi Ive used HCP before, about 14 years back,cant remember the prices, but they came back looking better than new (Yamaha XV1000 stanchions) 1st class job.