Well here it is. After a bit of soul searching we decided to go ahead and build some 76 degree offset Triumph Cranks. As with all of our cranks this one is Fully Heat-Treated, then Nitrited, 4340 Billet Material. Photo shows the 82mm version. We also offer a 89mm Stroker version with 1-3/4" Norton sized mains.
We are taking orders for another batch (8-12 weeks). A $250 deposit will get one in the queue.
Current price - $1600 ($1500 for 82mm 360 cranks) includes balancing with purchase of MAP rods and pistons.
Matching cams in a few different street grinds are available. These cams are sold at our usual price and will Not have the customary add-on fees normally associate with "specials" and "custom" grinds as sold elsewhere.
NEW: A matching Full digital electronic ignition system is now in stock $325
Beautiful crank Marino, if you have time, would you briefly explain rationale of using 76* offset versus 90*? Will a modern ignition be available? I know Pazon has a 90* so I would imagine a 76* would be available for the asking. Mark
Queens Horsemen, I asked Marino those very questions yesterday and on the 90* crank I'm afraid not. He's pretty much committed his time and resources to the 76* and feels it's the way to go for now, considering stock 82mm stroke and 6.5" rods. The first run of these sold immediately, both the 82mm and 89mm, 3 of each I believe. I wouldn't hold my breath on waiting for a 90* & I'm no engineer but think perhaps the 76* may induce less of a rocking couple then the 90*, no idea if it would even be noticeable though. I stand to be corrected on this. Marino did think a package deal would be the best way to go, his crank,pistons,rods but didn't imply one was forthcoming. He mentioned 3 cams similar to mega 1000, 1060 and one I can't remember (these are old no.s) are only weeks away @ same price as his other std. type cams, $395.00 I believe. On the ignition, Marino said he has talked to Pazon about this but nothing firm yet. I emailed Andy at Pazon and he said the same. He did say he had a lot of commitments at the moment. I followed up by asking if we couldn't just reslot the rotor on the 360 or 90* version of his dual plugged Smartfire but so far no answer. It would seem that if the 90* works then converting to 76* by using a modified rotor shouldn't be a problem since the Smartfire uses a single pick up with dbl. slotted rotor. It would still be a wasted spark system. I guess the bottom line is, if you want an offset billet crank it's going to be 76* and you better put your deposit down and get in the que if you want one any time soon...
yes thanks i want one with rods and pistons balanced and posted thanks 48-50% balance factor no bs. about time some one has made these cranks in billet good on you marino 'for keeping the dream alive thanks brian
When I built my 76% crank,I talked to Boyer and he sent me a setup which included a pickup with only one coil and a standard rotor which I had to move one of the magnets 38%. It has worked beautifully. The only trouble I ever had was the magnets got weak and it was hard to start. New magnets,back to one or two kick starts. It has around 62k on it at present. Man, I also wish that MAP billet crank was available when I built mine. Real nice Marino!!! Dick
Great looking crank. Something I noticed with ign on my 90deg was it seems better without an idle spark from the other cyl, I changed to 2 separate ignitions, just a matter of two pickup coils and one trigger/bar spinning round. (Rather than two bars past one coil firing two plugs together.)You can do this using the stock mechanical adv with a bar welded to it. And use the pickups to switch transistors that fire a coil each.
This weekend at a racemeeting I used a trispark ign on the 76deg outfit. It has a deadspark and you do have to drill your own holes in the rotor and fit the magnets. I used the trispark as the Boyer failed last year and I wanted to try something new. The bike has never ran so well. Then the crankcases fell apart. That withstanding there are now options for staggered crank ignitions in trumpy's. Do your research, its never been easier to do this conversion. Chris
1950 Speed Twin outfit 1951 Thunderbird outfit (76 degree racebike, or is it 90 deg now?) 1955 BSA D3 minibike outfit Triumph solo's