Across:
1. Report of urine in bed? This upsets princess! (3)
8. Taking in deranged idiot, brought in to be Pavlov's subject (12)
or   8. see 28
9. Many (beyond hundred) stick together (4)
10. Rushes out, leaving hotel for clients (5)
11. Cycling supremo from Russia as seen on short circuits? (4)
13. Cycling method used alternatively is notoriously quiet sort (8)
14. Meditate, brother, but also do come back! (5)
16. Oddly Geldof boogied all round (7)
18. Cheating cyclist might use it, if ride's to be enhanced (7)
20. Animal ankles used in cycling scandal (5)
21. Starts to lean on industry new guys, involving one in court finding (8)
24. see 25 down
25. Tantrum with mantra being turned into logo (5)
26. Sex god hurt back (4)
27. Having developed sane religion, many gathered at the Bellevue-15 Hotel in 1 down in July '76 (12)
28. Song is easier with odd bits omitted (3)
Down:
1. Greek character has boy "help" in a strange way; it all starts as brotherly love here? (12)
2. A reduction here essentially more harsh (6)
:3. On menu: pain mostly, suffering and illness (9)
4. I see sad suffering and illness (7)
or   4. see 27 across
5. Thick mindset, ignoring first and last points (5)
6. After taking in 28, incomplete refund arranged is more harsh (8)
7. Long time cycling guru (4)
12. Part of 28 8 hosting 17 of 27 4 blighted cowgirl on toe (7 5)
15. Jimi's guitar and Henry's car in William's town on Avon? (9)
17. Returned 28 and such, a bonus primarily for small organisms (8)
:19. Curious caption: "Car fever related to 27 4" (7)
22. Some 27 saved as drug inhibiting tumor growth (6)
23. Cycling fellows thus get signals (5)
24,24ac. Incredible story of non-drinker overcoming everything with beer? (4 4)
Solution:
=PEA=P=D=M=U==A|
=H=CONDITIONING|
=I=U=E=S=D=F==E|
CLOT=USERS=ARCS|
=A=E=M=A=T=I=O=|
=DORMOUSE=BROOD|
=E===N=E=S=E=L=|
GLOBOID=STEROID|
=P=A=A=P=R===N=|
SHOCK=LOCATING=|
=I=T=O=N=T=R=T=|
TALE=MOTIF=EROS|
A==R=E=I=O=S=W=|
LEGIONNAIRES=E=|
L==A=S=C=D=AIR=|
Name: 913 - Cycling Illness
Author: by BenDR

Annos-Across:
1. hp( PEE )
8. *IDIOT in CONNING
9. C + LOT
10. *( RUS(h)ES )
11. cyc( CSAR )
13. cyc( MO USED OR )
14. BRO + OD
16. alt GeLdOf BoOgIeD
18. *( RIDES TO )
20. cyc( HOCKS )
21. ( A in CT ) in acr( L O I N G )
25. rev( FIT OM )
26. rev( SORE )
27. *( SANE RELIGION )
28. alt (e)A(s)I(e)R
Annos-Down:
1. PHI + LAD + *HELP + I(t) A(ll)
2. A CUT + (h)ER(e)
:3. *( ON MENU PAI(n) )
4. *( I SEE SAD )
5. MI(n)DS(e)T
6. AIR in *( REFUN(d) )
7. cyc( SAGE )
12. *( COWGIRL ON TOE )
15. STRAT + FORD
17. rev( AIR ETC. A B(onus) )
:19. *CAPTION + dd
22. tel (legionna)IRES SA(ved)
23. cyc( MEN SO )
24,24ac. ALL in TT + ALE
Defs-Across:
1. in bed? This upsets princess!
8. Pavlov's subject
9. stick together
10. clients
11. as seen on short circuits
13. notoriously quiet sort
14. Meditate
16. all round
18. Cheating cyclist might use it
20. scandal
21. finding
25. logo
26. Sex god
27. many gathered at the Bellevue-15 Hotel in 1 down in July '76
28. Song
Defs-Down:
1. brotherly love here?
2. more harsh
:3. illness
4. illness
5. Thick
6. more harsh
7. Long time
12. Part of 28 8 hosting 27 4 17
15. William's town on Avon
17. small organisms
:19. Car
:19. fever related to 27 4
22. drug inhibiting tumor growth
23. signals
24,24ac. Incredible story