After a mid-winter marathon, the fire is in the frame. Tried to give this one it's own character compared to the first one which was rather a smooth and mellow tourer. This one is more along the lines of stripped down to bare bones. The 'pipe and muffler on both sides' caused quite a bit of agony particularly as the curved downtube left limited room between the front wheel and itself for the front pipe to cross over. The classically beautiful symmetrical exhaust of machines such as the 1939 Triumph Speed Twin is very dear to many and was a worthy cause to strive for, in spite of the
challenge posed by this V twin as opposed to an inherently symmetrical parallel twin. The slim rear mudguard is actually a stock front one. Custom stays were made to mount it to the swingarm which allow it to hug the tire closely and move with it over bumps. The custom downtube was curved to allow room for the front cylinder without increasing the wheelbase too much- only 2.5", which brings it to 56.5", only 1" more than a Vincent.
The left-shifting gearbox was converted to right side shift by fabricating a custom gearshift lever and a simple linkage, avoiding replacement of the inner and outer covers and shift mechanisms.
The clutch has also been beefed up to handle the extra power and didn't exhibit signs of slippage.
It was taken for a brief yet *truly exhilarating* ride - she goes, solid punchy torque available right from idle. Tying up random loose ends while it's still below freezing and snowed up. Wiring, re-routing cables, new tank emblems done this weekend, couple of other things next and then waiting for warm weather.
Do check out more pics in the GALLERY page.
Once again, THANK you for your support!
Hullo there! Great news! Those wooden patterns you saw here not long ago yielded some really nice castings!
Sorry for the delay in updating the blog, have been working hard on figuring out the CNC machining setups. Also, have been posting stuff on the Facebook page, neglecting to post an update here. But...here goes!
Can you spot the difference :-)
Two complete sets on the foundry floor, fresh from the shot blasting cabinet, still warm!
Machining has begun on one of the sets, currently figuring out the best sequence of operations for efficiency and accuracy and the machining fixtures required. This is moving a LOT quicker than me learning as I went along on the old manual Bridgeport three years ago! Stay tuned!
Disgustingly overdue. Had to be done.
Just remembered that it was the wee hours of Jan 23rd three years ago that the lump fired up for the first time. I suppose it's Happy Birthday Musket! Remember this....
Hi guys! Check out the current issue of "The Horse"! They were kind enough to honor the Musket with a lovely 4 page spread! THANK YOU!
Hi there! Long time, I know! But, time spent with the nose to the sandstone...errr...grindstone. Phew...that was a LOT of tricky nooks and crannies to sand and blend in smoothly. Worked on Christmas eve too...and will keep at it even today, applying finish coats.
Things which caused delays - biggest one was a modification which will allow *left side shift* with the newer 5 speed transmission. I had never seen one of those transmissions up close until I saw Chumma's. Discovered that the left side shift lever is mounted on a shaft that runs through a hole drilled right through the crankcase. This ofcourse needed a new boss to be accurately located and placed right where this drilling would be. Don't ask me how annoying that was and how long it took :-( Then there was a change in the timing cover for machining reasons, had to completely remove and rethink the bosses for the oil feed banjo bolts. Better now in wood than later in metal. Some of the features of the new design:
1. V angle is now 59 deg. This was arrived at after considering feedback on the original Musket engine, making it more compact, reducing length and making frame fitment much easier while allowing both 350 and 500 top ends. The original 70deg. angle was tricky to fit in the frame. The narrower angle looks nicer, though this is a matter of taste.
2. The oil filter is now housed in the timing cover- the smaller and lower of the two holes visible. This needed a lot of relocation of the internals but simplified the oil circuit (the original motor has an external filter housing which needed more plumbing). The larger and upper hole, at the 'peak' of the timing cover is the ignition/points housing, which is now a part of the casting, as opposed to the bolted on housing in the original engine.
3. Cooling fins sculpted onto the timing cover. Just HAD to do this :-) Pretty! The timing cover is much more in keeping with classic air-cooled aesthetics. It is overall a much more sculpted, smoothly radiused form which recalls fondly the beautiful castings from our favorite vintage engines. Took a LONG time!
4. New motor will allow left side shift with the 5 speed gearbox.
All in all, I think this is an improvement. Let's see how it goes.
Forgive the *slight blurriness* of some photos, after so much sanding, my hands are just a bit shaky :-)
Don't miss the very last photo which shows the two complete sets of identical twins :-). Yup, everything had to be done twice over to make a backup pattern. After the disaster last time....