Author Topic: Rear Drive Question  (Read 964 times)

Offline e.cleven

  • Hatchling
  • **
  • Posts: 118
  • Location: S. Minn/SW. Fl.
Rear Drive Question
« on: October 09, 2021, 07:38:25 PM »
I got a 7/33 rear drive unit last spring with the idea of putting in my 08 Calvin to pep it up a bit..
Well the spline depth is not the same so it was a no go.
Will it work in my 02 Stone????
I thought I would ask first before I start taking things apart.
Thanks in advance for the information.

Ride Safe.

Earl

Offline Mr Revhead

  • Gosling
  • ***
  • Posts: 417
Re: Rear Drive Question
« Reply #1 on: October 10, 2021, 12:13:59 AM »
What part won't work? Are you swapping the whole drive unit, or the gears? Gears should swap ok.

If it won't fit your Vintage, it won't fit an 02 Cali

Offline fotoguzzi

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 19931
  • vee git tooh soon oldt und too late wise -my Dad
Re: Rear Drive Question
« Reply #2 on: October 10, 2021, 06:47:17 AM »
There's an inner spacer/sleeve that needs to swap out. It might seem like it can't be removed but it can, kind of a pressed in fit. So take the spacer from the 8x33 and use it in the new drive housing.
It's about 2-3" long and the axle runs through it.
« Last Edit: October 10, 2021, 06:48:39 AM by fotoguzzi »
MINNEAPOLIS, MN

Offline e.cleven

  • Hatchling
  • **
  • Posts: 118
  • Location: S. Minn/SW. Fl.
Re: Rear Drive Question
« Reply #3 on: October 10, 2021, 07:20:35 AM »
Mr. Revhead, I'm swapping the whole unit, it was last spring and problem is a little fuzzy now. The unit either slid in to far or not far enough.
Fotoguzzi may have the answer. I will try it again the winter.

Thanks for your replys.

Earl

Wildguzzi.com

Re: Rear Drive Question
« Reply #3 on: October 10, 2021, 07:20:35 AM »

Offline Wayne Orwig

  • Gaggle Hero
  • *****
  • Posts: 13908
    • Hog Mountain weather
  • Location: Hog Mountain
Re: Rear Drive Question
« Reply #4 on: October 10, 2021, 07:46:07 AM »
The only difference, I believe, would be the axle spacer, which can be swapped out. The front spline depth has not changed in like forever.
Scientist have discovered that people will believe anything, if you first say "Scientists have discovered...."

Offline Antietam Classic Cycle

  • Gaggle Hero
  • *****
  • *
  • Posts: 14141
  • Happily stuck in the past.
    • Antietam Classic Cycle
  • Location: Rohrersville, Maryland
Re: Rear Drive Question
« Reply #5 on: October 10, 2021, 08:45:42 AM »
The female splined hub in the rear drive changed around 2001, from part no. 12351400/17351400 (which had been used since 1967), to 03351450 which had deeper splines.

So, to answer e.cleven's question, no - it likely won't work on the '02 Stone either.
Charlie

Offline e.cleven

  • Hatchling
  • **
  • Posts: 118
  • Location: S. Minn/SW. Fl.
Re: Rear Drive Question
« Reply #6 on: October 11, 2021, 08:54:14 PM »
Charlie, thanks for the info. When I had the two drive unit side by side the 08 splines were an 1/8 to 3/16 inch different, the 08 being the deeper of the two.
Any way, being the hard head I am I will still try it on the 02 Stone this winter and if it doesn't work I'll say ,dang  Charlie was right.. I will even post it.

Thanks.

Earl

Offline ccoli

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • Posts: 2093
  • What? Me Worry?
  • Location: The Great White North
Re: Rear Drive Question
« Reply #7 on: October 12, 2021, 02:03:55 PM »
The female splines on the input to the drive stick up proud of the housing more so than on the older 7:33 drives. This is because in order to install the cheaper spoked rim, Guzzi had to change 4 or 5 other parts. They were to shift the wheel to the left in order to center the skinnier rim. You might just find an EV wheel that will fit right to your 7:33 with the other spacers etc.
Wisconsin MGNOC Rep
03 EVT/EML hack, 99 Bassa, SPIII, 3-78 Robins, 75 T3, 74 Eldo, 32 Sport15, Ambo custom.

Online Tkelly

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 1030
Re: Rear Drive Question
« Reply #8 on: October 13, 2021, 09:54:54 AM »
Forget about it and sell the rear drive,the Calvin is plenty peppy for old farts like us.

Offline Stratodisaster

  • New Egg
  • *
  • *
  • Posts: 77
  • Location: Sw Virginia
Re: Rear Drive Question
« Reply #9 on: October 13, 2021, 03:41:21 PM »
Mr. Revhead, I'm swapping the whole unit, it was last spring and problem is a little fuzzy now.                                  Judging from your post and your dual addresses I’d say that qualifies as a senior moment.  I have the quie regularly nowadays.

Scuotere sonaglio e rotolare

***Wildguzzi Official Logo High Quality 5 Color Window Decals Back In Stock***
Shipping in USA Only. Awesome quality. Back by popular demand. All proceeds go back into the forum.
http://www.wildguzzi.com/Products/products.htm
Advertise Here
 

Quad Lock - The best GPS / phone mount system for your motorcycles, no damage to your cameras!!
Get a Wildguzzi discount of 10% off your order!
http://quadlock.refr.cc/luapmckeever
Advertise Here