1935 TT History Article

[Bullitbob]

Hope this isn't a duplicate post but thought it was some pretty good Guzzi history!

http://thevintagent.com/2018/02/06/1935-the-greatest-tt/

[oldbike54]

 Always a great read , thanks Robert 

 Dusty

[JJ]

Hope this isn't a duplicate post but thought it was some pretty good Guzzi history!

http://thevintagent.com/2018/02/06/1935-the-greatest-tt/

A good read...with some classic historical photos!! 



 

[Rick in WNY]

Excellent read, thank you for sharing! 

[Sasquatch Jim]

  I have always enjoyed hysterical photos and stories of the old racers.

[guzzi ride]

Nice find... thanks for sharing

[twowings]

Those guys were tough! Good read...

[Rough Edge racing]

 The photo of the determined rider  leaning into a turn and the plug wrench in his boot is outstanding...

[LowRyter]

The 500cc challenge in 1935 came from Moto Guzzi and their 120-degree in-line-twin sohc-engined bike. We again return to 1933. While successful at 250cc in ‘Lightweight’ racing, Moto Guzzi were no longer competitive in the larger classes. In 1933 Carlo Guzzi (no doubt encouraged by his partner and racing enthusiast Giorgio Parodi) had the inspiration to mate two 250cc engines to create the ‘bicilindri’. The magazine ‘Motorcycling’ in 1935 describes the engine as having an even beat. A cutaway drawing from 1951 (the last year of the ‘bicilindri’) shows, in effect, two 250cc engines each with it own flywheels and crankpins joined through a central main bearing (with the crankpins set 120 degrees apart, hence the even beat).

would that be a Vtwin or an off-set parallel twin or just none of the above hence, bicilindri?

[Bullitbob]

would that be a Vtwin or an off-set parallel twin or just none of the above hence, bicilindri?

I would think it's still a V-Twin.

[Moto]

I would think it's still a V-Twin.

Yes, it's a v-twin. It was Guzzi's most successful racer in the 30's and 40's, I believe. You can find a lot about it in various Guzzi histories, for example, Colombo's book. Look here for a copy for about $30, instead of the $100+ you'll find at Amazon:

https://www.abebooks.co.uk/servlet/BookDetailsPL?bi=14856144078&tab=1&searchurl=tn%3Dmoto%2Bguzzi%26sortby%3D17%26an%3Dcolombo%2Bmario&cm_sp=snippet-_-srp1-_-seller1

Nice article, thanks for posting it.

[SED]

Great article and photos.

Pictures of the late 40s version.





      

[Moto]

Great article and photos.

Pictures of the late 40s version.

Great photos, SED. I think you must have taken those at the museum.

The exploded drawing of the motor shows the central bearing location on the crankshaft between the two halves corresponding to two 250cc motors. I bet the diameters of the outboard (roller) bearings are the same as on the 250. The design produced a somewhat wide v-twin compared to most, I think.

Guzzi's idea to combine two world-beating 250cc motors produced a world-beating 500cc. Way to go, Carlo!

[Bullitbob]

Great article and photos.

Pictures of the late 40s version.





      

Thanks for sharing the pics!

[SED]

Glad you like the pictures - it was fun taking them    Have pretty much decided that the early 120 v-twin would be the ultimate bike. 

Great photos, SED. I think you must have taken those at the museum.

The exploded drawing of the motor shows the central bearing location on the crankshaft between the two halves corresponding to two 250cc motors. I bet the diameters of the outboard (roller) bearings are the same as on the 250. The design produced a somewhat wide v-twin compared to most, I think.

Guzzi's idea to combine two world-beating 250cc motors produced a world-beating 500cc. Way to go, Carlo!

Engine diagram from Columbo's book.  Anyone have some other engine diagrams?

[SED]

This was posted on the FacePlant Guzzi single cylinder group.

[Moto]

This was posted on the FacePlant Guzzi single cylinder group.

Great find. That is indeed Stanley Woods on the number 30 bicilindri winning the 1935 TT.

Thanks for posting.