What's in a wheelbase?

Discussion in 'Modelling' started by Za Rodinu, Jan 20, 2013.

  1. Za Rodinu

    Za Rodinu Hot air manufacturer

    In case people are wondering, I'm not dead yet, not even pining for the fjords :)

    I'd like to ask a question if I may. Wheelbase in a vehicle is supposedly defined as the distance in verticals between the axis of the first wheel and the axis of the rearmost wheel. Right? Right.

    However The Internet does not quite agree on this as in case of vehicles with three axles, the rearmost two on a bogie, the wheelbase may be given as the distance between the axis of the driving axle and the BOGIE axle, not the last wheel!

    So which is the rule? There is quite a difference between both!

    Right now I'm looking at the Studebaker 2.5ton 6x4 series, of which some models had a 162" wheelbase, but I don't know what to use as reference for scaling drawings - last wheel or bogie trunnion.

    Now what the heck do I need this for is another story, but weasel with me as all the bears are hibernating :p but fingers smell of PU resin :)
     
  2. Dave55

    Dave55 Atlanta, USA

  3. Smudger Jnr

    Smudger Jnr Our Man in Berlin

  4. Za Rodinu

    Za Rodinu Hot air manufacturer

    I wasn't aware of HMVF, thank you very much Dave.

    Tom, even today I got an email from Oliver at o5m6. Quite a nice fellow indeed. His drawings are posted at irregular scales, they're posted at the size that suits him most for the website. But anyway if I can get one dimension I can figure the rest :)

    This obsession with wheelbases is explained by the fact that's a reliable measurement to estimate from, if you have a side photo it's an easy measurement to make - say from hubcap centre to hubcap centre. Much easier to measure than total lentgh for instance.

    Problem is getting that dimension. I was looking at KfzderWehrmacht.de and for an instance wheelbase for the Krupp L3H163 you get 3650+1100 mm... I'll assume this means 3650mm between first and middle axle, plus 1100mm to the rearmost axle.

    But anyway, I'll be checking that forum :)
     
  5. KevinC

    KevinC Slightly wierd

  6. Earthican

    Earthican Senior Member

    It won't solve your problem but here's the situation with values published by the US Army:

    For US Army Ordnance, the wheelbase is from the steering axle to the effective rear axle. For a rear bogey arrangement that would be the trunnion axle. From that value for wheelbase other steering parameters are defined and calculated.

    US Army Transportation Corps has different definitions.

    I do not know if the 162 inches is accurate for the 2 1/2 Ton Studebaker.
     
  7. Za Rodinu

    Za Rodinu Hot air manufacturer

    Kevin, thank you so much for your kind offer, Hannant's have my address on file :p

    Earthican, thank you for your input, it was never meant to be easy. Oh, and if not 162" then what can it be?
     
  8. CL1

    CL1 116th LAA and 92nd (Loyals) LAA,Royal Artillery

  9. canuck

    canuck Closed Account

    Miguel
    I don't give a rats ass about wheelbases but I'm thrilled to see you back in circulation.:)
     
  10. Za Rodinu

    Za Rodinu Hot air manufacturer

    Thank you very much, Clive, a very interesting document, I learnt a few things even if not specifically connected to my query but additional to it :)

    Tim, think of me as a sort of a nuclear submarine - you never know where I am, but you'll know I am somewhere :p
     
  11. Dave55

    Dave55 Atlanta, USA

    Miguel,

    I do not know if you have seen this site, but you may be able to scale it to confirm the sizes.
    I could not find a site showing wheelbase sizes, although blueprints are available for a price.

    Engines of the Red Army in WW2 - International M-5-6x4-318 with BM-13-16 Katiusha rocket launcher

    Regards
    Tom

    I was poking around that site after you posted your link and saw this one on K series internationals. Any idea what the back story is behind the 'notorious' ?

    Most, if not all of them were KR-11 built from 1941-1943 by the notorious Lend-Lease supplier International.

    Engines of the Red Army in WW2 - International Harvester KR-11
     
  12. Smudger Jnr

    Smudger Jnr Our Man in Berlin

    I was poking around that site after you posted your link and saw this one on K series internationals. Any idea what the back story is behind the 'notorious' ?

    Most, if not all of them were KR-11 built from 1941-1943 by the notorious Lend-Lease supplier International.

    Engines of the Red Army in WW2 - International Harvester KR-11

    Dave,

    I have no idea why it is labelled as Notorious.
    A far as I know Internation build a lot of vehicles but cannot ever recall the company being named as Notorious.
    Perhaps some member may clear this up.

    Regards
    Tom
     
  13. Neilie

    Neilie Member

    Bart Vanderveen's Directory shows the US 6 with a wheelbase of 148 " with 44" between the two rear wheels and defines wheelbase for multi-axle vehicles as the distance between the center of the front and the center of the tandem bogies.

    Hope this helps.

    Cheers,

    Neil
     
  14. Za Rodinu

    Za Rodinu Hot air manufacturer

    I'm over a year late but thank you sincerely, Neil :)

    I expect I may have some news on this front as I discovered by chance a new (for me) piece of equipment which will accelerate my master making process A LOT!

    More news later (or sooner, I hope). Back to the drawing board CAD.
     

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