Servicar Frame ID

[kickstarts]

I did a little searching but I got some conflicting info, so maybe a few people can school me on the ways to ID the years, steering stem sizes by year and when they changed from manual brake to hydraulic.

So far I've heard:

* 1951 as the first year for hydraulic brakes

* 1958 as the first year for 1" stem
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Info provided by Dragstew and Scavenger

37-40 2 bolt tranny mount

41-47 3 bolt tranny and 2 bolt clutch cable mount

48-50 3 hole clutch cable mount

51-57 Hyd brake mount 7/8 neck ( look under neck for seat for springer damper )

58-73 ( 74 ) Same as above but Glide neck, 73/74 has a bracket on the right side for E brake handle

As introduced,(1932) the Servi-Car had a drum brake on the front wheel and another drum brake inside the rear axle housing, decelerating both rear wheels. In 1937, the braking system was upgraded to have a drum brake on each wheel. A hydraulic rear brake system was introduced in 1951. The very last Servi-Cars, built late in their last model year, would have disc brakes on all three wheels.

The early (32-36 ) rears are HUGE in the middle, so easy to spot. The disc brake model was also 6 lug.

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Am I wrong? Any way to correctly figure the year of a Servi frame?

Thanks everyone.

[Tito]

The best I can do, I have the 'spare parts' 1940-50 book. It says the part number for 41-50 (possibly farther) is 2801-41. So I guess they had a different frame from beginning of production around 1936-41?

I know that doesn't help too much, but maybe it will narrow things a bit..

[kickstarts]

Thanks Tito!

Every little piece helps. I'll take as much info as I can get.

[Dragstews]

The rear brakes was wild on the first few years....
Needed more stopping power....

[kickstarts]

Originally Posted by Dragstews

The rear brakes was wild on the first few years....
Needed more stopping power....

LOL, is that from the factory service bulletin?

Now I'm reading that the 1" stem Hydra Glide started in 1958, Not 60 like I stated. I'll change it up top unless someone has different info.

[Scavenger]

ok here ya go

37-40 2 bolt tranny mount

41-47 3 bolt tranny and 2 bolt clutch cable mount

48-50 3 hole clutch cable mount

51-57 Hyd brake mount 7/8 neck ( look under neck for seat for springer damper )

58-73 ( 74 ) Same as above but Glide neck, 73/74 has a bracket on the right side for E brake handle

[Dragstews]

Originally Posted by kickstarts

LOL, is that from the factory service bulletin?

Now I'm reading that the 1" stem Hydra Glide started in 1958, Not 60 like I stated. I'll change it up top unless someone has different info.

As introduced,(1932) the Servi-Car had a drum brake on the front wheel and another drum brake inside the rear axle housing, decelerating both rear wheels. In 1937, the braking system was upgraded to have a drum brake on each wheel. A hydraulic rear brake system was introduced in 1951. The very last Servi-Cars, built late in their last model year, would have disc brakes on all three wheels.

Had a few of these rear end over the years.

And this 51 GE was fun.....
Kinda a slow but sure bike....Reminded me of a Mule....Not a Buell.



It was bone stock when I pulled it out of the Hills of Tenn..by the fold down Tow Bar.
................Oh Look...I had hair back in that day.............

[Scavenger]

Originally Posted by Dragstews

As introduced, the Servi-Car had a drum brake on the front wheel and another drum brake inside the rear axle housing, decelerating both rear wheels. In 1937, the braking system was upgraded to have a drum brake on each wheel. A hydraulic rear brake system was introduced in 1951. The very last Servi-Cars, built late in their last model year, would have disc brakes on all three wheels.

Had a few of these rear end over the years.

The early (32-36 ) rears are HUGE in the middle, so easy to spot. The disc brake model was also 6 lug.

[kickstarts]

Thanks so much guys, really.

I'll update up top in case someone else needs this info. If you or anyone else has any more, keep it coming.

If anyone has pictures of distinguishing areas of the frame, please feel free to post them as well.

[Dragstews]

Originally Posted by Scavenger

The early (32-36 ) rears are HUGE in the middle, so easy to spot.

And almost a all day job to reline the brake shoes....

[Scavenger]

Here is a 74-74 frame, if you look close at the MC mount you will see a diagonal brace, that is for the E hand brake lever.

Second Pic is a Hyd. 3 bolt section

Third 3 bolt Mech rear

Forth 58-74

Fifth BSA graph

[Dragstews]

Originally Posted by Scavenger

Second Pic is a Hyd. 3 bolt section

Got any photos of the Sportie powered 3-wheeler..??

[kickstarts]

Pictures are always nice! Thanks guys.

[Dragstews]

Originally Posted by kickstarts

Pictures are always nice! Thanks guys.

Some are...Some ain't....



Cool 80" Evo Big Twin powered Trike....



The Boy was still riding it like this....Shows just how well made they are to have this kind of damage and Keep on Ticking........

Especially when there is nearly four times more Pony's going on then what it was designed to work with....

[kickstarts]

Damn! Looks like it lost a chain at one time.
Is that rear upside down and backwards?

[Dragstews]

Yeah.....The big twins have a left side chain...
Sportie's and 45"s are right side....

Think your right about throwing a chain to do that damage...

Another Evo powered Trike here....



Common to flip the axle for doing them....
The struts should have been also flipped for the load going on .... I would think....
As long as it wasn't weighted heavy seems to work fine the way it is....

[kickstarts]

Yeah, I know about the chain sides, but aren't the truss rods supposed to be on the bottom? If I'm correct then the front of the housing is facing the rear?

[Dragstews]

It would indeed be wise to move the truss rods....
Seem many that has been running years with-out doing that with no problems.

Does look like the axle tubes would work loose in the chunk... Someday..???

[Scavenger]

Originally Posted by kickstarts

Yeah, I know about the chain sides, but aren't the truss rods supposed to be on the bottom? If I'm correct then the front of the housing is facing the rear?

Yes , on the bottom, but can't really be helped when you have to flip the rear.

[kickstarts]

Originally Posted by Scavenger

Yes , on the bottom, but can't really be helped when you have to flip the rear.

I'm with ya...slow on the uptake. See why I need a thread on this stuff?

Do the drums come off separately from the keyed hubs or are they attached as a unit?