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By: - 22nd January 2010 at 21:20 Permalink - Edited 1st January 1970 at 01:00
Hi All,
just wondering if anyone can help with detailed dimensions for the Warner Super Scarab 165 engine? I'm working on a 3D model of the Australian CAC Wackett trainer which used this powerplant, and I need some detailed drawings showing dimensions. The 3D model is not for a flight sim, since they are usually just outside skins, I'm working to include all the internal structure as well (hence the need for engine dimensions). I have many detail photos (see some attached), but need real measurements before I can go any further. I'm told the overhaul manual does not have dimensioned drawings, so I'm looking for some other source...Regards,
Derek
Hello Derek,
mark up some dimensions on your photos and I will measure my engine for you.
regards
Mark Pilkington
By: - 22nd January 2010 at 23:45 Permalink - Edited 1st January 1970 at 01:00
I know this isn't a Super Scarab but it may help.
John
By: - 23rd January 2010 at 05:13 Permalink - Edited 1st January 1970 at 01:00
Derek,
from page 4 of the 1946 Warner Engine Handbook Super Scarab Model 165:
Overall Diameter 37- 1/4 "
Overall Length 30-1/2"
If you scale up the 145HP Scarab drawing from John above to these 165D dimensions it should give you everything you need?
regards
Mark Pilkington
By: - 23rd January 2010 at 11:54 Permalink - Edited 1st January 1970 at 01:00
Careful, that is a 125 drawing, the 145 has the same bore and stroke as the 165 (which is slightly higher compression) but not sure about the 125. There are also a lot of other differences between the 165 and the 145 and I am pretty sure the length is different and so the 125 is likely to be much more different.
I hve a detailed drawing of the 145 somewhere but it is in storage and i can't get to but, as said above, there are some significant differences. If you need a manual for a 145 google the Williams Aircraft collection, he has a downloadable manual. I used this for the rebuild on mine!
M
By: - 23rd January 2010 at 13:46 Permalink - Edited 1st January 1970 at 01:00
.
I dont have any manuals, parts or experience with the 125hp or 145hp Scarabs, as my only involvement is with the Super Scarab 165D.
According to a copy of "Aircraft Handbook" F.Colvin 1942 - McGraw Hill, the differences are:
Scarab 40 = 125hp, bore = 4 1/4" stroke = 4 1/4" displacement = 422
Super Scarab 40 = 145hp, bore = 4 5/8" stroke = 4 1/4" displacement = 499
Super Scarab 165= 165hp, bore = 4 5/8" stroke = 4 1/4" displacement = 499
From page 4 of my original copy of the Warner Engine Handbook Super Scarab Model 165:
Overall Diameter 37- 1/4 "
Overall Length 30-1/2"
bore = 4.635" (4 5/8") stroke = 4.25" (4 1/4") displacement = 500
It also describes the 185 as
Overall Diameter 37- 1/4 "
Overall Length 30-1/2"
bore = 4.875" (4 7/8") stroke = 4.25" (4 1/4") displacement = 550
I understood the 165D was known as the R-500 in military service with the 185 being the R-550 and obviously the 125hp was the R-420
John's 125hp drawing has
Overall Diameter 36- 9/16"
Overall Length 28-31/32"
An online 145 manual is available here http://www.russellw.com/manuals/warner/default.htm
Which lists the 145hp dimensions as
Overall Diameter 36- 9/16"
Overall Length 29 to 29-3/4"
So it appears likely the 125 & 145 are the same engine simply with different bores.
As the bore and stroke is the same for the 145 and 165 I suspect the different diameter comes from a revised larger & higher compression head?
As the dimensions above are sourced from manuals I assume them to be right, where as the following from Wiki is unsourced?
http://en.wikipedia.org/wiki/Warner_Scarab
Specifications (Warner Scarab 50)
General characteristics
Type: 7 cylinder air cooled radial
Bore: 4 1⁄4in (108mm)
Stroke: 4 1⁄4in (108mm)
Displacement: 422 cuin (6.92L)
Length: 14in (355.6mm)
Width: mm (in)
Height: 36.5 in (927.1mm)
Power output: 125hp @ 2,050 RPM
Specifications (Warner Super Scarab 50)
General characteristics
Type: 7 cylinder air cooled radial
Bore: 4 5⁄8in (117.5mm)
Stroke: 4 1⁄4in (108mm)
Displacement: 499.8 cuin (8.19 L)
Length: 14 in (355.6mm)
Width: mm (in)
Height: 36.5 in (927.1mm)
Dry weight: 305 lb (138.35kg)
Dry weight: 285 lb (129.28kg)
Power output: 145hp @ 2,050 RPM
As Derek is modelling the CAC Wackett Trainer it is the Warner Super Scarab 165D that he needs the dimensions of, as per my manuals details above.
Those dimensions and Johns 125hp drawing should be enough?, as the 165 dimensions are only 2% and 5% larger than the 125/145 dimensions in anycase and hardley likely to compromise Dereks model?
I have 4x 165D engines in my shed so if you need other dimensions or need the manual dimensions confirmed, just let me know.
Regards
Mark Pilkington
By: - 23rd January 2010 at 15:13 Permalink - Edited 1st January 1970 at 01:00
Mark,
how are you doing? Its been a while since we corresponded!. Many thanks for your offer... that would be fantastic. I have a basic 2D CAD drawing already done (based on my photos and measurements from Moorabbin), so I can mark up some key dimensions on these drawings for you to measure/confirm from your "collection".
John, thanks for the scan of the Scarab 125, interesting family resemblence to the 165 (as you would expect). The crank-cases look very similar, but the cylinder-head intake and exhaust arrangements are different.
Regards,
Derek
By: - 23rd January 2010 at 15:20 Permalink - Edited 1st January 1970 at 01:00
.
I am very well thanks Derek, although my Wackett and Warners are still in hibernation at this time due to family, work and other things - smiles
I didnt realise you were O-S at the moment?
just email me the photos or your drawing at [email]mark_pilkington@hotmail.com[/email] and I will get the exact measurements from the engine itself.
regards
Mark Pilkington
Posts: 36
By: derekbu - 22nd January 2010 at 19:24 - Edited 2nd October 2019 at 11:40
Hi All,
just wondering if anyone can help with detailed dimensions for the Warner Super Scarab 165 engine? I'm working on a 3D model of the Australian CAC Wackett trainer which used this powerplant, and I need some detailed drawings showing dimensions. The 3D model is not for a flight sim, since they are usually just outside skins, I'm working to include all the internal structure as well (hence the need for engine dimensions). I have many detail photos (see some attached), but need real measurements before I can go any further. I'm told the overhaul manual does not have dimensioned drawings, so I'm looking for some other source...
Regards,
Derek